Duplicating machine



March 4, 1930. $AB|K DUPLICATING MACHINE Filed Jail. 9, 1928 6 Sheets-Sheet l March 4, 1930. G. SABIK 1,749,160

' DUPLICATING MACHINE Filed Jan. 9, 1928 6 Sheets-Sheet 2 6607 e Jabz'k, $304 979 .39 g

March 4, 1930. sABlK DUPLICATI-NG MACHINE Filed Jan. 9, 1928 6 Sheets-Sheet 3 Filed Jan. 9, 1928 6 Sheets-Sheet 4 \5" \l H 0 z a w z W a w? w March 4, 1930. G. SABIK DUPLICATING MACHINE e Sheets-Sheet 5 Filed Jan. 9, 1928 G. SABIK DUPLI CA'I'ING MACHINE Filed Jan. 9, 1928 6 Sheets-Sheet 6 1577/9721 (or: Geo-rte fiabzit,

March 4, 1930.

m I I I I v z I I u i 4 u i a I n a n I u u n I a z n I u I m u u n l 1 u a u I 10 Y The objectofhthe present invention Patented Mar; 4, 1930 PATENT OFFICE A v Gnome-sum. or, wnsrnnusrnmes; I'LLINoIs, ASSIGNOB'TO U. s. DUPLICATOR COMPANY, or CHICAGO, ILLINOIS, a CORPORATION OF ILLINOIS nUILIcArINe MACHINE Application filed January 9, 1928. Serial 245,346.

I 'llhis machine in its preferred form isof the typewhich employs agelatine strip orband mountedon spoolsin such a waythat a section thereof may be drawn across the top surj, face of the machine in POSltlOIl to receive a stencilimpression which is thereafter repro ducedyon letter sheets or the like fed into the machine andv compressed upon the gelatine surface. containing the impression.

constructa machine ofthis character so that thesheets may be 'easily'and uniformly f ed into the machine'and thereafter registered in correct: relationto the impression in the v gelatine. and compressed thereon, and finally fstripped;therefromgand delivered in sequence at the far. end of. the machine without the necessity for manipulating the sheets by hand during the progress through the maz The [invention also relates to the means provided for performing the above opera 7 tions incontinuous sequence by the constant travel of rollers'and strippers in one and the 25' same vdirection, so that it will not be necessary, after taking an impression, to restore the mechanislnto initial position which is quite common in machines of the character. By the means provded, the operations proceed continuously, sothat during the opera- V time, and also to the' 'arrangement of the strippingrollers which engage the sheets and "surface Without.manualattention on the part I of theoperator. x j

The invention also relates to the means provided for transporting the imprinted :sheets to the discharging position, to the is totions incident to the taking of one. impression the next succeeding sheet may, be fed 1 automatically strip them'from the gelatine' to the means provided for permitting anend to end reversal thereof, as occasion may re-. quire, and to theconstruction and arrangement of the machine as a whole, all as will more particularly and in detail appear from a description, in conjunction with the accompanying drawings, wherein Figure 1 is a side elevation of the machine; Fig. 2'is a plan-view thereof; 1 Figs. 3, 4, 5, 6, 7 and 8 are longitudinal sectional details taken at the infeeding end of the machine, showing in section the prog ress of a sheet of paper through the machine and illustrating the action of the impression and stripping rollers; r Fig. 9 is a longitudinal sectional detail showing the progress of the stripping operation;

, for the gelatine strip and the method of interchangeably mounting the same;

Fig. 14 is a detail showing the gear lock for preventing back rotation of the windingspool; j p Fig. 15 is a detail of the latch for holding the journalled end of the spool in position in the frame Fig. 16 is a perspective showing the end of oneof the spools and Figs. 17 and 18 show details of a modified form of roller mountings.

Themachine as a whole is built upon a frame comprising elongated side plates 20 which are supported above a base frame com prising side rails 21 having medial standards 22 secured to the side plates, and end standards 23 and 24, the standards being duplicated on each side of the machine.

The standards 24 provide mountings for a shaft 25, which at each end affords a mounting for a sprocket wheel 26, the sprocket wheels being arranged exteriorly of the side plates 20, and in like manner the standards 23 afford mountings fora shaft 27 carrying sprocket wheels 28 similarly positioned on "opposite sides of the side plates 20.

' power transmitted to the rear shaft on one side will impart rotation to-bothof'the rear sprocket wheels. For this purpose, a ring gear 30 is mounted upon the spokes of one'of the sprocketwheels' 26 andfmeshes with a non.

p'inion 3l which is, driven through asprocket train comprising a sprocket wheel 32, a 20 sprocket chain .33, and a sprocket wheel 34 on a driving shaft 35,wl ic h"shaft is rotated by means of a handle 36, or by motor or other source of power." The details of the driv-' ing'mechanism may be modified since'they form no essential partof the present inven- The companion sprocket chains 29, which travel in unison on opposite sides of the masion andstripping rollers, which'will chine; constitute carriers for the compresnow be described in detail. v a

Each of the chainscarries a pair of'ho'ok plates 37 and 38 provided with forwardly' facing slots-39-and 40 respectively The slots are arranged to receive a pairof pins 41 and 42, which stand outwardly from a frame'plate 43 which occupies aposition inside of the. adjacent sprocket chain, as shown in ,Fig; 1.

Thearrangement is the same oneach sidevof the machine so that a description of one of these plates and associated mechanisms will The plates 43 are united by transversely extending tie rods 44 and 45 which in con-- junction with thefraine plates constitute a transversely extending "carriage frame forv the mounting of the compression roller which serves to compress the paper sheet against the gelatine surface in thetaking of an impression.

The tie rods '44 and 45 are eaclrsurrounded 'byasleeve 47, which sleeves serve tospace the plates, the arrangement being one which affordsthe necessaryrigidity to the carriage frameto prevent sagging or flexing as it is carriedforwardby the companion sprocket chains with which it is associated.

' The compression roller 46 is mounted upon a shaft 48 carried at each end by a bracket arm 49, the bracket arms in each instance being pivoted upon a pinor stud 50, and each bracket arm is provided beyond the pivot with a finger 51 which is engaged by a spring 52 tendingto swingthe' roller downwardly a I stop pin 53'being providedto limit the action of the spring.

Each frame plate 43 outer face with a face plate 54 which ex tends downwardlyv below the lower edge of the face plate 43 and affords a mounting for a roller'55 which engages the lower face of a flange 56 (Fig. 12), which constitutes a t'rackway for the frame plate 43;which-rests upon the upper faceofthe fiange,cthe ar-' rangement being one which permits the frame plates 43 of the carriage to ride freely along p a p the flange on eachside of the machine as the c chain advances.

The gelatine strip or band 57 rests upon a table plate 58 which' constitutes the upper a surface of the machine; the edges of which table plate rest upon flanges 59 bolted or 0th erwise secured tothe side walls2OI *T'he gela-* tine strip or band'at each end" passesfover 'an idle roller 60, and thence to spool 61,

which will presently be described n' g detail;

Immediately in advance of the" forward a roller 60 is located apaper stOppIa-te 62 which extends transversely of themachine,

and is forwardly turned at its upper edge toalford an overhanging lip 'flange 63. a The ends of the plate 62 are secured tojrearwardly extending slotted arms 64, thefslot s of which embrace'a lug plate 65 on 'the'proXi mateside 'wall 20, which arrangementfper is provided on its mits the stop plate toebe 'adj'usted more or i 7 less to gauge the distance .between the stop 3 plate and the surface of the gelatine band.*

The sheets of paper are carried upon a sloping feed plate 66 which,- as shown in Fig; 2,'is preferably provided witha plu rality of ribsor' corrugations 67. The sl'op-' ing feed plate 66 is supported atits lower end between a pair of arms 68 which are and unite w F g. 1'. I I;

A stack of paper'sheets "A"are laid upon I thesloping surface of the feed plate, and one of the sheets is fed rear-wardly and downwardly :beneath a bridge bar 70 untilit conmountedupon the projecting outer ends of the shaft 27, and the forward or upper end of the feed plate 66 is supportedby a pair of brace rods 69 whicheXt'end downwardly to tacts withthe paperstop62 beneath theoverhanging flanged edge orlip 63; An inspec-i tion of Figs. 3, 4, '5, 6 and 7 will show the progressive action" of the compression roller on the paper as the roller carrlageadvances" from leftto right. V

As the carriage swings around the curved end of the frame'plates. 20, the spacerjsleevc 1 i 1 47 of the tie rod 44'will first of alllengage th'eunder surfaceof the paper as in Fig.4,

and lift it into contact'with theoverhanging lip 63. Thereafter, the compression roller 46 under spring tension will ride over the edge of the lip, as inFig. '5', bearing against the 1 10 l th the side ra ls 21, as shown in against the gelatine surface.

By the 'time' the'roller has advanced to the position indicated in1Figl 7, the paper will ,be laid'flatwise upon the gelatine'strip and the impression will be'taken, so that thereafter: the stripping of the paper willjbegin.

The stripping mechanism is mounted in a manner quite similar'to that heretofore described. The stripping mechanism is can ried between sideplates 71 which are held in spacedjrelation by tie rods 72, the plates 71 being provided with outstandingpins or studs 73 and 74 which engage within the slots 7 5 and 76 respectively of hook plates 77 and 78 similar in all respects to those first described. j

0 Each plate 71 is provided with a roller 79 2o guide flange 56 heretofore described, the roller being carried by an extension 80 which is secured to and depends below the plates 71. The tie'rods 7 2.are preferably surrounded by spacer sleeves 81, which arrangement whichrides alongthe under surface of the unites the side plate 71 into a rigid stripper carriage quite similar to thecarriage first described.

. FThe sideplates 'of the stripper carriage provide mountings for apair of stripping rollers 82 and, 83 mounted upon axle'rods 84 and 85 respectively. The axle rod .85 at each end extends through a slot 86 in the adjacent plate 71,and receives a spring 87 which tends to draw the roller 83 toward the roller 82', which latter is preferably provided with a rubber sheathing. The two rollers are in'in- I termeshing relation with one another through the medium of gears 88 and 89,'and the roller 82 is further provided'with a driving pinion 90 which meshes with a rack 91 formed on or secured to the upperedge of the adjacent frame/plate or wall 20, so'that, as ,the carriage moves along the frame, both stripping rollers will be positively driven and turn in opposition to one'anotherI v Thefrack' 91 at the rounded ends of the plates 20is given an arcuate configuration I "as at9l so that, as the stripper carriage p to engage with'the forwardedge'of the paper,

the pinion 90 will engage with the rack and f the rollers will thereafter begin to rotate and continue rotating during the stripping operamoves "forwardly toward the point where it is tionli v V a The manner in which the forward edge of "the pap'eris gripped between the stripping rollers is best illustratedin Fig. 7, fromwhioh it will be seen that the forward edge of the ipaper projects beyond the lip on the stop plate 63, so that, as the stripping rollers are carried forward,the rearmost roller will .engagelthe forward edge ofthe paper and will ,feed it upinto the bite I of the rollers, 'as indicatedjinFig. 8." 7

As the stripping operation progresses, "the upturned end of the paper will encounter an obliquely extending shield 92 mounted upon the forwardtie rod 72, which shield deflects the paper downwardly and causes it to rest upon a series of cross bars 93 carried by standards 94 upstanding from the sprocket chains, which cross bars in unison constitute an elevated platform for the support of the paper sheet which is thus carried forward to the rear end of the machine, at which point it discharges as the chain passes around the rear sprocket wheels.

7 In order to hold the two carriages in position, the ends of the pins or studs 42 and 74 respectively are each held in place by a pivoted latch 95, the hooked end of which is drawn upwardly by a spring 96, so that the pin 42, or 74 as the case may be, will be held against withdrawal, and with this latching arrangement on each side, each of the carriages is firmly held in position, but each may be easily removed, or replaced, as occasion may require.

The winding spool 61 is duplicated at each end of. the machine, so that a description of one spool will apply to both. The gelatine strip or band is adapted to be fed from a spoollmounted at or near the rear end of the machine, which may be termed the delivery spool, to an identical spool at the forward end of the machine, which for the time being constitutes the winding spool, and in order that either spool may constitute the winding spool the spools are constructed as indicated particularly in Figs. 13 and 16. As there shown,'each spool at each-end is provided with a' cylindrical metal cap 97 having in its end apair of sockets or apertures 98 on opposite sides of acentrally disposed spindle 99 which projects outwardly from a base 100.

Each of the spindles constitutes a journal 'mounting,'and the pair of apertures at each end constitute chuck'sockets adapted to receive a pair of studs 101 on a boss 102 carried by a disk orplate 103 having gear teeth 104, as shown in Fig. 14.

The gear diskior plate 103 lies against the inner face of one of the side wall-plates 20 and is provided in its center with an outthe gear disk 103 is rotated in a'counterclockwise direction, as in Fig. 4, the locking pinion 110 will be lifted, permitting the winding spindle to be rotated, but any effort to rotate the winding spindle in the reverse direction will cause the locking pinion to teeth and prevent rotation thereof; The

gear plate lll overhangs the prevents displacementthereof.

The opposite side wall of the frame is pinion and illustrated in Fig. 15, and this wall is pro vided with an elongated slot 112, near the inner end of which is pivoted-an L-shaped latch dog 113, the tail of which connects, with a spring 114 which tends to lift the opposite end of the latch dog above the level of the slot 112, the arrangement being'such. that as the end spindle of the, spool is swung toward the inner end of the slot the dog latch will be depressed and will snap upvardly as in Fig, 15 to hold the spindle journalledat the inner end of the slot. I

In lieu of the roller mountings shownin 10, the simplified arrangement shown in Figs.17,and 18 maybe employed. In this case, in lieu of the plate 71, I employa plate 115 which is directly secured to one ofthe links of the chain 21, the link pins 21 in this instance being fixed in and projecting outwardly from the plate; The upper edge of the plate is provided with slots 116 and 117 the. latter of which corresponds with the elongated slot 86in the plate shown in Fig. 10. These slots receive the ends of the roller shafts 84 and when the plate of Figs. 17 and 18 is used to support the" stripping rollers and the shaft ends are held in place by 'a pivoted latch 18 which is notched on its under edge to complementthehalf bearings afforded by the slots.

The tie rods are secured to the plates in the manner already described and the rear end of the plate is hooked at 119 to receiver the. end of the first of the series of cross bars 93 for supporting the paper as it is stripped from the gelatine. A roller 120 engages the under side of the flange track 59 and a clip' 121 is provided to bridge the upper side of the rack 91. plates 115 are similar to the plates 71 save that in the former case the companion plates on opposite sides of the machine in conjunction with thetie rods constitute a frame fixed to the chain from which" the rollers are removable, while in the case of plates 71 the frame and rollers are together removable as a unit. Y

Operation The operation of the machine may be briefly described as follows:

The gelatinestrip rolled up on the delivering spool is mounted in position at the rear end ofthe machine tolie between the side walls of the frame, one wall of whichis pref" In all material respects the cured to the winding spool any suitable manner, after which the winding spoolm'ay, be tightened by turn-ing'the spindle by thei use of a handle or other win ding means, An impression is takenon theexposed portion of the gelatine, band from'a, master copy, in

strip may be advanced to'expose afresh sec tion, and the process repeated from timeto' time until the-entire length of the strip'has 5 been rolled up on the winding spool.

After allowing the exhausted stripto for afpredetermined period, which permits the ink to recede from the surface of the ployed as the winding spool.

The gelatinestrip, as itlis again drawn acrossthe table top, will bein reversed re lation to that first-occupied; that is to say, i the side of the strip which previously lay i on the right side of the machine will now: lie on the left side of the machine, which is, highly desirable, in that the ink impressions gelatine, the strip may. again be; used, and 1 1n t-hlS'lIlStfll'lCB the spool which previously acted as the winding spool willbecome the delivery spool, and theiempty -spo0l em-v will be more uniformly distributed toward bothsides of thestripthanwould bethe} case if the same side of the strip lay always in proximity tothe same-side 0f the, Ina-y chine. This method ofreversal requires that eitherendof each-spool may constitutethe engaging end with the driving studs, and

by forming the caps at each end of each spool with socket apertures; either end of the spool may be engaged with the driving studs 101. The correspondingapertures at the opposite end of the spool willin' no way interfere with the functioningfof the: assoelated: spindle 99 which journals the spool at that endyand in like manner the spindle a at the driving end will be received in a centralaperture 115 while the studs 101 en-ster the apertures 98 in the proximate end; of the spool, sothat thedriving will be 'ef v fected'at that end. This arrangement ren j ders the spools interchangeable end for end is highly;

at each end of the machine, which desirable. for the reasons stated; 7

' With the gelatine strip or band properly 7 i adjusted the sheets of paper will be fed down from the feeding plate to' rest against the stop plate, and as soon as the'impression" I, roller passes up over theforward end' of the machine the lower end of the paper will be caught against the lip on the stop plate and thepaper sheet will be swungrover! onto' 7 the gelatine surface as the spring-pressed compression roller rolls over the upper face of the lip, 63, momentarily clamping.the

paper sheet during the'interval of timeity is being drawn out and thrown over into; .posltlon on the gelatine surface; and immei} diately thereafter the ,compression roll will if begin to press down-against the gelatine so i I that the end ofthe paper will be constantly {the gelatine surface; I p A As the cha n advances, the .compresslon gripped andcompressejd with no portuni y for its displacementduring the interval of y a tune "1t 18 be ng swung over intofpo'sition on v I 3 "roller, will smooth out the'paper, andforcibly Ocompress-;the"fsame against thegelatine to receive the impresslon The'strlpper carriage with the stripping rollers followslafter.

" c the, compression carriagewith its roller and engages the] forward edge of the paper,

iwliich in every instance .will project slightly 1 beyond the lip'63, as in, Fig. 7 ,so that the stripping rollers will have an opportunity "to grip the unsupported forward edge of the i paper andjcarry the same up into thebite c I a I to properlystrip the paper from thegelat ne ofztherollers, which is necessary inorde'r -surface;

Asshown in, rig! 9, the stripping toners 1 stand {in elevated relation abovethe gela-L tine surface, so that the paper will be lifted up between the i rollers and smoothly I and evenly strip awayfromthe gelatine and feed eve tothe supporting rods 93, which conthe paper sheetto the farend of the machine sheet maybe positioned'against the stop plate-in preparation for the arriyal'rof the j compression, roller "of the] second group 'of mechanisms, and vobviously the -mach1ne, i might'beelongated'to provide for; the mounte ing of three orimoresets of compressing and stripping mechanismsas occasionimight require, The movement of the chain being continuous, there wlll be no loss oftime OCfcasioned by a restoring; movement of the mechanisms, so that the machinemay be con tinuously operated at an expenditure of a I f fi inimum of powen either by handor by 7. l V I I mot'or,;as:thecase may be.

he inventlon is one which combines simplici ty infconstructi on with speed and pre'- cision in operation. Althoughthe apparatus has been described wvith considerable par- 7 5 ticularity as to detail, it is not the intention f tolimit the invention to the specific censtrucg non shown, since variations in detailnnght be provided for without departing from the 5 spirit of the invention, e v

1. In a duplicatin'gmachine, the combina- I-claimr 1 ,tion of a frame adaptedtohold a duplicat- *ingsurface, a paperstop near one' end of the positionto be occupied by said duplicating surfacein position toarrest a sheet ofpaper surface in position to arrest a sheet of paper fedtoward said surf'ace, and a movable impression roller mounted to be moved from a position beneath the stopped end .of said paper to contact said'paper and swing the same over said stopand onto said duplicating-surface, sa d roller being spring pressed and adapted, in con unction with the said stop, to clamp the end of the paper as the roller rides over said stop,substantially as described. a i I f 3, In a duplicating machine, the combinationof a frame adapted to holda duplicating surface, a paperstop' near one end of the position to be occupied by said duplicating surface in position to arrest a sheet of paper fed towardsaid surface, a movable impression I roller mounted" to be moved from a position beneath the stopped end of said paper to contactsaid paper and swing the same over said stop and onto said duplicating surface, said roller beingspring'prcssed and adapted,'in conjunction with the said stop, to clamp the end of the paper as the roller rides over said stop, and a cross rod'associated andmovable with'said impression roller to. initially lift the endof said paper into engaging relation with said stop, substantially as described.

' 4. In a duplicating machine, the combination of aframe adapted to hold aduplicat- 1ngsurface,;a paper stop nearvone end of the position to be occupied by said duplicating surface in position to arrest a sheet of paper fed toward said surface, a movable impression roller mounted to bemoved from a position beneath the stoppedend of said paper to contactsaid paper and swing the same over said stop and onto said duplicating surface, anda stripper movable with and behind said impression roller and adapted to engage the forward end ofsaid paper and strip the same from the impression surface, substantially asdescribed. it r r 5. In a duplicating machine, the combination of a frame adapted to hold a duplicating surface, a paper stop near one end of the position to be occupied by said duplicating surface in position to arrest a sheet of paper fed toward said surface, a movable impression roller mounted to be moved from a position beneath the stepped. end of said paper to contact said paper and swing the same over said stop and onto said duplicating surface, said roller beingspring pressed and'adapted, in. conjunQtiQu with the said stop, to clamp the end of the paper. asthe roller rides over said stop, and a stripper movable with and b'ehind said impression roller and adapted to engage the forward end of said paper. and strip the same from the impression 'sur- I face, substantially as described;

. 6; In a duplicating'machine, thecombination'of. a frame adapted to hold a duplicatingqsurface, a paperstop near one end of the positionto be occupied by said duplicating' surface in'position to arrest a sheet of paperffed'toward said'sur-face, a movable impression roller mountedto be moved from a position beneath they stopped end of said paper to contact. said paper and swing the same over said stop and onto said duplicating surface, said roller being spring pressedand adapted, in conjunction with the said stop,

to clamp the end'of the paper as theroller rides over said stop, a'cross rod associated and movable with said impression roller to initially lift th endef said .paper into en gaging relation with said stop, and a strip per movable with and behind said impression roller and adapted; to engage the forward end of'said paper and'strip the same from the impression surface, substantially'as describedf p :7. In a duplicating machine, the combination of a frame, adaptedto hold an imp'ression surface, an lmpresslon carriage movable along-said frame, aspring pressed impress s1on roller carried by said carr age, a .stop at the forward end of the positlon to be occupied by said impression surface, said stop being provided withan angularly disposed flange constituting a lip, a supporting plate for sheets of paper positioned to permit each sheet to be fed to a position to contact said stop beneath the lip, the relation of the'parts' [beingsuch'that as the impression roller is moved it will initially clamp the aper against the'lip and thereafter swing. the pa-i per over the stopand onto the impression surface and compress the paper uponsaid surface, substantially asdescribed. I

8 In a duplicatingmachine,the combina tion of a'frame, adapted to hold an impression surface, an impression carriage movable along said frame, a spring pressed impression roller carried by said carriage, a stop at the forward end of the position to be occupied by said impression surface, said stop being provided with an angularly disposed flange constituting a lip, a supporting plate for sheets of paper positioned to permit each sheet to be fed to aposition to contact said stop beneath the lip, therelation of the parts being, such that asv the im ression roller is moved it 'will initially damp the paper against the lip and thereafter swing the pa per over thestop and onto the impression surface and compress the paper upon said surface, and stripping rollers movable uniformly with and behind the impression roller and positioned to engage the end of the" per projecting beyond saidstop andstrip the paper fromthe impressionsurface,subf I stantially' as described.

tion of a frame,-adapted to 'holdan impresoccupied said impression I surface, said 'stop being providedwith, anangularly'dis- V, V posed flang constituting a lip, a supporting i 'plate'for sheets of paper positioned to permit each sheettobefedto a position tocontact partsbeing such that as the impression 'pller:

'is movedit will initiallyfclamp. the paper 9. Ina duplicating; machine, the combin sion' surface, an impression icarriagje 'mov-' able along said frame, aspring pressed im-- pression "roller carried by mas er-rage, a stop at the forward end of the position to be) [so said stop beneath the l ip,--the relation of the against the" lip and thereafter swing the -pa-. 1

per v over, the stop and ontotheimpression "positioned to engage theend of the paper projectingbeyondsaid stop and strip the pa:

surface andcompress'the paper upon said I surface, stripp ng rollers movable uniformly 3 l w tlrand behind the impression roller and per. fromthe impression surfaceandan -ele-1 Vatedsuppo'rt: movable behind the stripping rollersdand adapted to receive and transport I the paper sheets todischargingposition",sub- I v V 4 r v stantial'lv' as described.

'7 10. In a duplicating machine, thecombina tion of a frame adapted 'to hold "an impres sion surface, a pair of endlesscarriers mount ed to bring their upper turns into parallel relation with the impressionsurfacejon each :{sideithereofifan' impressionjcarriage having 7 .ltS ends securedto sa d endless carriers,

fedtoposition,tl1e relation'of the stop and lmpresslon roller beingsuch thatthe latter relation with theimpressioli'surface substan tially as described. I

11. In a duplicating machine, the combina "adapted to; arrest the sheets of paper when. 4

ed to bring their upper turns into parallel re lation ,wfiththeimpressionsurface on each r I side thereo f,-an impressioncarriage having its ends secured' tosaid'endless carriers, a

spring pressed impression roller carried by said carri age and adapted to bear downwardly upon said impression'surfac a paper stop i located in proximate relation to the position to be occupied by the impression surface and adapted toarrest the sheets of paper when. 7

fed to position, 'the'relation of thestop and,

impression roller being such that the latter U 30.

will initially clamp the pa er againstthesttp r e n my, will nitlallyclampthe paper against the sto flndthereafter move the paper it contacting c vt on of a frame adapted to hold an impres- I slon surface, apalr'of endless-carriersmountandthereafter movethe paper to contacting relation with the impression surface, strip- T'P L carriage having its ends secured to the,

endlesscarriers and positioned to follow the impression carriage, and stripping elements,

earried by the stripperearriage and adapted to stripiithe-paper fromtheimpress on sur face, substantially asdes'cribed; I 12;; Ina duplicating machine, the combination of a frame adapted'to hold animpression surface,apair of endless carriers mount ed to bring their upper i/Ul'IlSLIlIl DO' parallel relation with the impressionsurface on each side} thereof, an impression carriage having ts ends-'securedtosaid endless carriersya' v spring presse'dimpression" roller carried "by s said carriage and adapted to bear downwardly upon'saidampresslon surface, a paper v stop located in proximate relation to the po ag sition tobe occupied by the impression surface and adapted to arrest thesheets of paper wvhenfe'd to' position, the relationof the stop I, and ii'n 'aression rollerbeing such thatthe latter vill initially clamp thelpaper against fthesto'p and thereafter move the paper to con 1 .taetingrelationiwith'the impressionsurface,

astripp'ercarriage having its ends secured to the endless carriers and posltioned to follow v the impression carr agef,,and str pping ele:

3o nients carried by "the stripper carriage and adapted when moved to a position adj ac'ent to the stopto engagethe end fof thepaper sheet between the: rollers andstrip the same Y from-the impression surface, substantially as ClQSCl'1lOed.

j 13. I'naduplicating machine, the combination of a frame adapted to holdau mpres- 's'ionsurfac'e', a pair of endless carriers mount -ed to'bring their 'upper't'urns into'par'allel ""14 relation Wltlltll impression surface on "each side thereof,animpression carriage having 7 its endssecriiedtOsaid endless earrier's,' a spring" pressed impression rollercarried by said carriage and adaptedto bear downward- ,45 ly'upon said impression surface,'a paper stop locatedin proximate relation to the position to be occupied by the impression surface and adapted to arrest the sheets of paper when fed iQOZPOSllilOII, the relati'onof th'e stop and im pression-roller being such'that the latter will initially, clamp the pap I relation with the impression surface ,"a stripper carriage having 113$ ends secured to the endless carriers and positioned to follow the impression carriage, stripping elements carried' by; the stripper "carriage and adapted 7 when moved to a position adjacent to the i stop to engagehthe end of the paper sheet bee tween the rollersand strip the same from the impression surface, a rack onithe frame, and gear'elements in train with said rack for positively driving one of the stripping roll-- ers, substantially as described.

' In a duplicatirigg; machine, the combi- 7 against the stop Yand'thereafter movei'the paper to contacting nation of a frame adapted'to hold an impression surface, a pair of endless carrlers mounted to bringtheir upper turns 1nto parallel relation with the impression surface on each sideiothereof, an impression carriage havlngits ends secured to said endless car-' riers, aspring pressed impression roller carried by said carriage and adapted to bear downwardly-upon said impression surface, a

paper stop locatedin proximate relation to the position to-beoccupied by the impression surface and adapted to arrest the sheets of tion adjacent to the stop to engage the end of the paper sheet betweenthe roller and strip the. same from the impression surface, a raclron the frame, gear elements in train with saidirack, forvpositively driving one of the Stripping rollers, and an elevated support having its ends secured to the endless carrier's and'positioned behind the stripper carriage in position to receive the sheets stripped-from the impression surface and carry them to discharging position, substantially I as described a v :15; In a duplicating machine, the combination of 'a' frame adapted to hold an impression ,surface,.apair of endless carriers located one on each side of theframe and mounted to travel in parallel relation to the impression surface, an impression carriage having its ends secured to the endless carriers and having a guide roller secured to each end,

a track flangeoneach side of the frame in posit on to be engaged from beneath by the prexirnate guide roller, a spring pressed impressionroller carried between the ends of the carriage and positioned to behold under I spring tension in contactiwith the impression surface, and a paperstop adapted to arrest a sheetjof paper in proximate'relation to the impression surface and in position to be en gaged by'the' impression roller, substantially asdescrihed. r

16. In a duplicating machine, the combination of-a frame adapted to hold an impression surface and provided with a longitudinally extending rack at one side thereof, a pairofendless carriers located one on each side off-the frame and mounted to travel in parallel relation'to the impression surface,

an impression carriage having its ends secured" to the endless carriers and having a guide roller secured to eachend, a track flange'on each side of the frame in position to be engaged'from beneath by the proximate by the impression roller, a strippercarriage having its ends secured "to the endless carriers and having oneeach end a guide roller posiv tioned to contact the under surface of the guide flange, and spring roller elements carried by the stripper carriage. and having a gear train in mesh with said rack, one of said roller elements being adapted to move heneath the surface of the paper sheet to strip the same from the, impression surface, sub-' stantially as described, 7 c g 7 17; In a duplicating machine, the combinaion of a'frame adapted to hold an impr'es sion surface and provided with a longitudiually extending rack atone side thereof, .a

pair of endless carriers located one oneachi side of the frame and mounted to travel in parallel relation to "the impression surface,- an impression carriage'hav ng its ends --secured -'to the endless carriers and having a guide each side 'of the framein positionto be' enroller secured to each end, atrack flange on ga ged from beneath by the proximate guide roller, a spring'pressedimpression roller carried between the ends of the carriage and positioned to be held'under spring tension in contact with the impression surface, a paper stopv adapted to arrest a sheet of paper in proximate relation to the impression surface and in' position to be engaged by theimpression roller, a stripper carriage havingits ends secured to the endless carriers and havcontact the under surface of theguide flange,

spring roller element-s carried by the stripper,

carriage and having a gear train in mesh with said rack, one of said roller elements being adapted to move beneath the surface of the; n p

relation to the mpress onsurface and proj-- 1 paper sheet tostrip the same from the impressionsurface, and a plurality of cross bars having their ends secured to the endless-can riers and adapted to vtravel abovethe level of the impression surface and receive and support paper sheets stripped therefrom and convey them to discharging position, sub

'stantially as described.

1 18. In a duplicating machine, the combination of a frame provided with side walls, each wall having on its upper edge a longitudinally extending rack and a guide rail .er in compressive relation,, the framebeing ing on each end a guide roller positionedto having Lena platesfsecured I to the respective chains, aniinpression roller carried between a the end plates, a spring for holding 'said roll -I" adapted to mount an impression. surface adaptedto be contacted by saidroller, guide rollers on the end plates of the carriage positioned to contact the under surface ,of the track flange, a stripper (carriage provided with end plates securedrespectively to. the endless chains, guiderollers-on theend plates to engage with the under surfaces of the respective I track flanges, stripping rollers carriedbetween the endplates ofthe'st'ripper carriage, and gear elements on the rollersin scribed. .e

. .0 train with the racks, substantially as: de;-,

19. In adu-pli'cating machine, the combinaj 1 tion of a frame providedwith side walls, eachwall having on its upp'elledge a longitudp the rack,a pair of front sprocketwheel's 1o nally extending rack and a guide" rail below i cated one on each side of the-frame, a' pair of rear sprocket wheels located oneach side of the: frame, endless chains; on each sideof the frame mounted upon thecorresponding sprocketwheels, means for rotating, the

sprocket wheels to impart uniformrotatio'n to both'of. thechains, an impression carriage. having endplates secured to tlie respective .e

chains, an impression roller carried between the end plates, a spring forholding said, e, 'c

roller in compressive: relation, the frame be;

ing adapted tofmount an 'impression surface 1. 0

adapted to be contacted by said roller,lguide rollers on the end plates ofthe carriage positioned to contact 'the'under surface of th track flange, a stripper carriage provided I i with end plates secured respectively to'the endless chains, guide rollers on the end plates to engage withthe under surfaces ofthevrespective track flanges 'stripping rollers car ried between the end pl-ate O the stripper. e V carriage, gear elements on the rollersin train with the-racks, and a; paperstopinpro-ximate vided-at upper edge with anoverhanging- I 11p, the stopbeing positioned to-becontacted by the impression roller toclamp the endof the paper sheet against the lip as the roller passes over the lip and onto the impression 5 surface forswingingthepaper sheet onto 7 said surface'iand "compressing the on,- substantially as described." v GEORGE SABIIQ;

below the rack, a pair of front sprocket wheels located one on each side of the frame, 'a'pair of rear sprocket Wheels located on each s1de of the frame, endlesschains on each side of same there f v 

